Implementing a to_hash function for a class in ruby.

to_hash.rb

class Balls
  
  def initialize()
    @name = 'blah'
    @caption = 'blah'
  end
  
  def to_hash
    hash = self.instance_variables.inject({}) do |a, e|
      hash = {e[1..-1] => self.instance_variable_get(e)}
      a.merge(hash)
    end
    hash.symbolize_keys!
  end
  
end